Feed-water purifier for steam-boilers



(No Model.)

H. HACKNEY. FEED WATER PURIFIER FOR STEAM BOILERS. No. 410,413. Patented Sept. 3, 1889.

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UNITED STATES PATENT OFFICE.

HERBERT HACKNEY, OF TOPEKA, KANSAS, ASSIGNOR TO THE HACKNEY STEAM BOILER IMPROVEMENT COMPANY, OF ILLINOIS.

FEED-WATER PURIFIER FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 410,413, dated September 3, 1889. Application filed April 2, 1889. Serial No. 305,765. (No model.)

To all whom it may concern.- of sediment-trough. Fig. 6 is a detail view Be it known that I, HERBERT HACKNEY, a showing a modified arrangement of ,delivery citizen of the United States, residing at Toand discharge chambers. peka, in the county of Shawnee, State of A designates the bodyof the boiler, through Kansas, have invented certain new and usewhich extend the usual flues a, and B deful Improvements in Feedater Purifiers notes a mud-drum,that communicates by the for Steam-Boilers, of which I do declare the discharge-pipe b with the lower portion of following to be a full, clear, and exact dethe body of the boiler. Across the front end scription, reference being had to the accomof the boiler A extends the delivery end [0 panying drawings, forming part of this specichamber 0, and across the rear end of the fication. boiler extends a somewhat similar discharge- A serious difficulty encountered in the use chamber D, each of these chambers being of steam-boilers, particularly in sections of suitably sustained, as by brackets 5, from the the country where the water is strongly imwalls of the boilers. The inner side of each I 5 pregnated with lime, chemically or mechanof the end chambers Oand D is bypreference ically sustained in solution, is due to the fact provided with a series of ribs or flanges E, that a hard scale or crust is formed upon the corresponding in shape to the cross-section of surface and tubes of the boilers by reason of the sediment-troughs F, which extend from the deposition of the lime, and as Well also of end to end of the boiler and have their ex- 20 other impurities from the water, so that the treme ends fitted within and bolted to the cleaning of the boilers becomes a matter of flanges E of the end chambers. These sedisuch frequent necessity as to cause serious ment-troughs F comprise the upwardly and expense and inconvenience. outwardly flaring walls, the lower portions of The primary object of my invention is to these walls being brought very near together 25 provide improved means whereby the delivand united with the upper edge of the eX- cry of the feed-water to the boiler shall be panded pockets f, formed, by preference, of effected in such manner that the impurities approximately cylindrical shape. in the water, notably the carbonate of lime, By reference more particularly to Fig. 3 of shall be deposited therefrom within suitable the drawings it will be seen that the cham- 0 receptacles provided for the purpose before ber O is provided opposite the sedimentthe water is delivered into such part of the troughs F with openings c,corresponding,prefboiler as to contact with the walls of the tubes erably, with the spaces bet-ween the flaring or boiler-surface proper. walls of the troughs, while the chamber D at A further object of my invention is to sethe opposite end of the boiler is provided with 35 cure a more effective circulation of the waopenings cl, that communicate simply with the 8 ter within the boiler. pockets f of the troughs. Into the chamber To this end my invention consists in the 0 leads asuitable feed-water pipe G, through novel features of construction hereinafter which the feed-water of the boiler will be dedescribed, illustrated in the accompanying livered, and from this chamber C also lead 40 drawings, and particularly pointed out in the suitable circulating-pipes II, that serve to conclaims at the end of this specification. nect this chamber with the mud drum B.

Figure 1 is a view in vertical longitudinal From end to end of the bottom of the mudsection on line an so of Fig. 2. Fig. 2 is aview drum B extends a false bottom B, that is perin vertical cross-section on line 2 2 of Fig. l. forated adjacent its lower edges, the purpose 5 Fig. 3 is an enlarged detail perspective view of this false bottom being to aid in collecting 5 of one of the end chambers for the sedimentthe sediment that is precipitated within the troughs. Fig. 4: is a similar detail perspective drum, and at one end of the drum will be proview of the opposite end chamber of the sedivided a suitable blow-01f pipe B by the openment-troughs. Fig. 5 is a view in vertical ing of which the sediment in the drum can be 50 cross-section showing a modified construction removed from time to time.

o reason of the connection of the mud-drum B into the chamber 0 by the delivery-pipe G' it will pass through the openings 0 of this chamber into and along the upper portions of the sediment-troughs F from front to back of the boiler. As the comparatively cold water is thus introduced and mingles with the warmer water within the upper portion of the boiler, it will be diluted thereby, and the carbonate of lime held in suspension by the carbonic acid of the water will, by reason of this dilution with the water of higher temperature and comparatively free from carbonic acid, be caused to settle upon the inclined faces of the sediment-troughs and to deposit thence into the pockets of these troughs. This incoming supply of water will, as it becomes heated, rise and flow over the edges'of the sediment-troughs and mingle with the main volume of water Within the boiler. My object in extending a series of sedimenttroughs from end to end of the boiler and in connecting these troughs with a suitable chamber 0, through which the feed-water is delivered, is to enable the delivery of the feedwater into the body of the boiler to be effected over as wide an area as possible, so that a more perfect deposition of the impurities upon the sediment-troughs may be secured; and my purpose in connecting the end chamber O with the upper portion only of the delivery-troughs is to insure that the delivery of the feed-water will cause as little disturbance of the sedim entwithin the troughs as possible. For like reason the dischargechamber D is connected only with the lower portions or pockets of the sediment-troughs,

so that as the feed-water is delivered into the upper portions of these troughs there will be no circulation through the pockets tending to disturb the deposit of sediment therein. WVhen, however, it is desired to remove from the pockets f of the sediment-troughs the deposit therein collected, it will only be necessary to open the blow-off pipe D that extends from the end chamber D, thereby causing the sediment Within the pockets of the troughs F to pass into the end chamber D, and thence out of the boiler. It will be seen also that by with the delivery end chamber 0 by means of the circulating-pipes H a free circulation of the Water from the upper part of the boiler through the mud-drumis secured, and in practice it will be found that a much more effective circulation is obtained by reason of the wide distribution of the incoming volume of feed-water by means of the delivery end chamber 0 and the series of sediment-troughs.

In Fig. 5 ofthe drawings is illustrated a modified form of sediment-troughthat is to say, the sediment-trough proper is shown as provided with V-shaped false bottoms F and F (one or more may be used,) which extend from end to end of the trough, and are suitably sustained in position either by brackets extending from the trough or by flanges projecting from the end chamber, to which the troughs will be attached. These V-shaped troughs have long perforations or channels f at their bottoms, through which the sediment will. pass from one trough to the trough beneath, and finally into the sedimentpocket f. My purpose in thus providing the main sediment-trough with false bottoms, either one or more in number, is to expose a largersurface for collecting the sediment from the water and delivering it into the sediment-pockets.

In Fig. 6 of the drawings is shown a modified manner of attaching the sediment-troughs to the delivery and discharge chambers. In this construction the discharge-chambers C and D are formed together, constituting, 1n fact, a single box divided by a partition-wall or diaphragm R, that extends from end to end of the box and serves to separate the delivery-chamber C from the discharge-chamber D. In this construction the delivery-chamber G will be provided with openings comm unicating with the upper portion of the troughs, and the discharge-chamber D will be provided with openings communicating with the sediment-pockets f of the troughs, and into the delivery-chamber C will lead a suitable feedwater pipe G and suit-able circulating-pipes H, that will connect the chamber 0 with the mud-drum B. When this construction is followed, the ends of the sediment-troughs]? at the back of the boiler will be closed, the delivery-chamber D not being then employed.

It will be readily understood that by opening the blow-off pipe attached to the discharge-chamber D in this last form of apparatus the sediment deposited within the pockets f can be withdrawn into the discharge-chamber and thence through the blowoff pipe.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a steam-boiler, of a series of open sediment-troughs extending from end to end of said boiler, a deliverychamber connected to said troughs and communicating therewith, a discharge-chamber connected to said troughs and communicating therewith, a feed-water-delivery pipe leading into said delivery-chamber, and a blow-off pipe leading from said dischargechamber, substantially as described.

2. The combination, with a steam-boiler, of a series of troughs having upwardly-expanded walls, and having sedimentrpockets communicating with the contracted portions of said walls, and suitable means for delivering the feed-water into said troughs, substantially as described.

3. The combination, with a steam-boiler, ofv

said troughs, a discharge-chamber at the opposite end of said troughs, a feed-water-delivery pipe communicating with said delivery-chamber, and a blow-off pipe communieating with the discharge-chamber, substantially as described.

4. The combination, with a steam-boiler, of a series of sediment-troughs having expanded upper walls, and having sediment-pockets connected to the contracted bottoms of said walls, a delivery-chamber connected to the front ends of said troughs and having openings communicating with the upper portion of said troughs, a discharge-chamber connected with the opposite ends of said troughs and having openings communicating with the sediment-pockets, a feed-Water pipe leading into said delivery-chamber, and a blow-off pipe leading from said discharge-chamber, substantially as described.

5. The combination, with a steam-boiler, of a series of sedimen t-troughs, a delivery-chamber connected with the ends of said troughs, and a discharge-chamber connected with .the opposite ends of said troughs, said delivery and discharge chambers being provided with flanges E for sustaining said troughs, substantially as described.

6. The combination, with a steam-boiler, of

' a series of sediment-troughs extending from end to end of said boiler in its upper portions, suitable means for delivering the feedwater into said troughs, suitable means for removing the sediment from said troughs, a mud-drum communicating with the boiler at its lower portion, and suitable circulatingpipes connecting said mud-drum with the upper portion of the boiler, substantially as described.

7. The combination,with a steam-boiler, of a series of sediment-troughs extending from end to end thereof in its upper portion, a delivery-chamber connected to said troughs and having openings communicating therewith, a discharge-chamber connected to the opposite ends of said troughs and having openings communicating therewith, a mud-drum, a pipe connecting said mud-drum with the lower portion of the boiler, and suitable circulatingpipes leading from said mud-drum to the delivery-chamber, substantially as described.

8. The combination, with a steam-boiler, of

a sediment-trough having upwardly-expanded walls, and having a sediment-pocket connected with said Walls at their contracted portions, and suitable means for delivering the feed-Water to said trough, andsuitable means for Withdrawing the sediment therefrom, substantially as described.

9. The combination, with a steam-boiler, of a sediment-trough having upwardly-expanded Walls, and having a sediment-pocket communicating with the lower contracted portion of said walls, and having also a V-shaped false bottom, and suitable means for delivering the feed-water into said trough, and suitable means for withdrawing the sediment therefrom, substantially as described. HERBERT HACKNEY.

Witnesses:

GEO. P. FISHER, J r., JAMES H. PE IRCE. 

